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发布者:来自网络 发布时间:2019/4/9 阅读:922次    关键字: AC-DC
SP6851-Green-Mode Power Switch


SP6851-Green-Mode Power Switch DataSheet 
 
DESCRIPTION
The SP6851 is a low cost, low startup current, current
mode PWM controller with green-mode
power-saving operation. Built-in 650V MOSFET
provides simple design for adapter. The integrated
functions include the leading-edge blanking of the
current sensing, internal slope compensation. It
would provide the users a superior AC/DC power
application of higher efficiency, low external
component counts, and lower cost solution for
applications.
The SP6851 features more protections or functions
for the following characteristics :
※Add OLP (Over Load Protection) function to
provide better protection performance for fault
conditions like short circuit or over load.
※Modify the OVP (Over Voltage Protection)
mechanism from the cycle-by-cycle mode to the
hiccup mode.
SP6851 is available in DIP-8P package.
 
FEATURES
_ High-Voltage BiCMOS Process
_ Very Low Startup Current (<20μA)
_ Under Voltage Lockout (UVLO )
_ Current Mode Control
_ Non-audible-noise Green Mode Control
_ Current Limiting
_ OLP (Over Load Protection)
_ OVP (Over Voltage Protection) on Vcc Pin
_ Leading-Edge Blanking
_ Programmable Switching Frequency
_ Internal Slope Compensation
_ Green-Mode Control for Power Saving
_ Building in 650V MOSFET
 
 
APPLICATIONS
_ AC/DC Switching Power Adaptor
_ Battery Charger
_ PC 5V Standby Power.
_ Open-Frame Switching Power Supply
 
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